<?php
/**
 * AB-PHP Test
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @author Patrick J. Mizer
 * @package ab.core
 */
namespace Ab\Core;

class Test
{
    /**
     * Test ID
     *
     * @var string
     */
    private $testId;

    /**
     *
     * @var Dao
     */
    private $dao;

    /**
     * Test cookie key
     * @var string
     */
    private $cookieKey;


    /**
     * Test variations
     *
     * @var array<TestVariation>
     */
    private $variations;

    /**
     *
     * @param string $testId
     * @param array $templates
     */
    public function __construct($testId, Dao $dao) {
        $this->testId         = $testId;
        $this->dao            = $dao;
        $this->cookieKey      = \Ab\Config\Test::COOKIE_PREFIX . md5($this->testId);
    }

    /**
     * get test ID
     * @return string
     */
    public function getTestId() {
        return $this->testId;
    }

    /**
     * Render test
     * @return string
     */
    public function render() {
        return $this->_selectTestVariation()->render();
    }

    /**
     * Render test
     * @return string
     */
    public function __toString() {
        return $this->render();
    }

    /**
     * Select test varition
     *
     * @return TestVariation
     */
    private function _selectTestVariation() {
        if(isset( $_COOKIE[$this->cookieKey]) && isset($this->variations[$_COOKIE[$this->cookieKey]])) {
            return $this->variations[$_COOKIE[$this->cookieKey]];
        } else {
            
            $variation = $this->variations[array_rand($this->variations)];

            \setcookie($this->cookieKey, $variation->getLabel(), -1, '/');
            return $variation;
        }
    }

    /**
     *
     * @param string $label
     * @param mixed $markup
     * @return Test 
     */
    public function addTestVariation($label, $markup) {
        $this->variations[$label] =
            Container::createTestVariation($label, $markup, $this);
        
        return $this;
    }

}

?>